package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.service.EmployeeService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import java.time.LocalDateTime;
import java.util.List;

@Service
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对
        //进行md5加密，然后再进行比对
        String md5Password = DigestUtils.md5DigestAsHex(password.getBytes());
        if (!md5Password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus() == StatusConstant.DISABLE) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }

    /**
     * 新增员工
     * @param employeeDTO 员工信息传输对象
     */
    @Override
    public void addEmployee(EmployeeDTO employeeDTO) {
        //检查用户名是否已经存在
/*        if (employeeMapper.getByUsername(employeeDTO.getUsername())!=null){
            throw new RuntimeException("用户名已存在");
        };*/
        System.out.println("当前线程Id: " + Thread.currentThread().getId());
        Employee employee = new Employee();
        //对象属性拷贝，empolyeeDTO拷贝到employee
        BeanUtils.copyProperties(employeeDTO,employee);
        //设置默认密码
        employee.setPassword(DigestUtils.md5DigestAsHex(PasswordConstant.DEFAULT_PASSWORD.getBytes()));
        //设置默认状态
        employee.setStatus(StatusConstant.ENABLE);
/*        //设置系统的创建时间
        employee.setCreateTime(LocalDateTime.now());
        //设置系统更新时间
        employee.setUpdateTime(LocalDateTime.now());
        //T设置当前记录创建人ID
        employee.setCreateUser(BaseContext.getCurrentId());
        //设置当前记录更新人ID
        employee.setUpdateUser(BaseContext.getCurrentId());*/
        employeeMapper.insert(employee);
    }

    /**
     * 员工分页查询
     * @param employeePageQueryDTO
     * @return
     */

    @Override
    public PageResult pageQuery(EmployeePageQueryDTO employeePageQueryDTO){
        //设置分页参数
        PageHelper.startPage(employeePageQueryDTO.getPage(),employeePageQueryDTO.getPageSize());
        //查询当前页数据（自动分页）
        Page<Employee> page = (Page<Employee>)employeeMapper.pageQuery(employeePageQueryDTO);
        //获取分页结果（包含总记录数）并返回
        return new PageResult(page.getTotal(),page.getResult());

    }

    /**
     * 启用禁用员工账号
     * @param status
     * @param id
     */

    @Override
    public void startOrStop(Integer status, Long id){
        Employee employee = Employee.builder()
                .status(status)
                .id(id)
/*                .updateTime(LocalDateTime.now())
                .updateUser(BaseContext.getCurrentId())*/
                .build();
        employeeMapper.update(employee);
    }

    /**
     * 根据id查询员工
     * @param id 员工id
     * @return Employee
     */
    @Override
    public Employee getById(Long id) {
        Employee employee = employeeMapper.getById(id);
        employee.setPassword("****");
        return employee;
    }

    /**
     * 编辑员工信息
     * @param employeeDTO DTO
     */
    @Override
    public void update(EmployeeDTO employeeDTO){
        Employee employee = new Employee();
        BeanUtils.copyProperties(employeeDTO,employee);
/*        employee.setUpdateTime(LocalDateTime.now());
        employee.setUpdateUser(BaseContext.getCurrentId());*/
        employeeMapper.update(employee);
    }

}
